When I buy electronic devices, I always keep an eye on their power consumption. Especially the power drain that you’ll get 24/7. For most devices, this is their “standby” power consumption, but some devices are left on all day long. The b-box 3 of Proximus is in this last category.

So I measured the power consumption of a b-box 3 starting up. Below is the result. I’ve stopped measuring once the device was fully operational.
Note that the steady state power consumption is 8.5W, which costs around €15/year at current prices.